Improvement in gage-cocks



UNITED STATES PATENT OFFICE.

E. A. WALKER, OF NASHVILLE, TENNESSEE.

IMPROVEMENT IN GAGE-COCKS.

Specification forming part of Letters Patent No. 419,016, dated July Q5, 1865.

To all whom, it may concer-n Be it known that I, E. A. IVALKER, ot'Nashville, in the county of Davidson and State ot' Tennessee, have invented a new and useful Improvement in Valves for Gage-Cocks, Snc. and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use thc same, reference being had to the accompanying drawing, forming part of this specication.

The drawing represents a longitudinal central section of a gage-cock constructed according to my invention.

The object of my invention is to construct a valve for a gage-cock that shall tit closely to its seat, operate easily, and lose none ot' its qualities by long-continued use.

My invention consists in making the valve in a conical form and tting itin a correspondently-beveled seat, and in forming in its base a tunnel-shaped cavity, into and against which the steam or water presses in such manner that the steam or water itself causes the valve to tit so closely to its seat that there is no possibility of any escape of either the steam or water, except when the valve is turned for that purpose.

To enable others to fully understand my invention, I will proceed to describe it.

A represents the body of the gage-cock, and B the stem thereof, which are screwed together in the usual way.

C is the valve-rod, and a the handle or knob thereof. In the drawing the handle or knob is shown in section, but the valve-rod in elevation, except near where the valve commences, where it and the Valve are shown in section, as well as the rest of the gage-cock.

D is the valve, which is made in the form of a cone, and is either made by enlarging the end ofthe rod into that shape, or made separate and afterward connected therewithin any suitable manner. This conical valve D tits into a correspondently-beveled cup, b, which constitutes the seat ot' the valve. In the base ot this valve D is made a conical or tunnelshaped cavity, c, into which the steam or water from the boiler presses when the gage-cock is in use and causes the valve D to press closely agai nst its seat b, forming a perfectly-tightjoint. Communicating with this tunnel-shaped cavity c there is made in the valvel) a duct-hole, d, which hole communicates (when the gagecock is open) with another hole or vent-pas-l base would cause the valve to press closelyv against its seat, and therefore make a tight joint; but I prefer to have the cavity in the base, for the reason that not only an upward pressure is given to the valve, but a lateral one is given to its sides by the steam in the said cavity, which tends to make even a tighterjoint, as can be readily understoodby reference to the drawing.

In a valve ot' this sort there is no necessity for grinding its faces and seat so evenly and accurately as is necessary in valves as usually constructed. The very pressure of the water or steam causes my valve to tit closely to, or ratherinto, its seat, and the more it is used the tighter becomes the joint, as must necessarily be the case from the nature ot' its construction.

Cylinder-cocks may be constructed on .this same principle, as well as water-faucets, Snc., and the same advantage be gained. I do not therefore contine myself to the use ot' a conical valve in a gage-cock.

IVhat I claim as new, and desire to secure by Letters Patent, is-

The conical valve D, constructed and operating substantially as herein specied.

E. A. WALKER.

Witnesses:

ANDREW LORD, J osEPH S. GREEN. 

